601. I once met the president. 602. Swimming with dolphins was unforgettable. 603. I almost drowned when I was a boy. 604. Last year I went to the Great Wall. 605. I’ll never forget the day I met my husband. 606. This is the most memorable day of my life. 607. You only graduate from college once. 608. Ester is a truly unforgettable person. 609. How can I forget the day my child was born? 610. I can’t forget how much you have done for me. 611. The one thing that I will never forget is swimming with the dolphins. 612. It was an unbelievable experience. 613. I made sure that I took lots of pictures so I can always remember my trip. 614. I wanted to capture every last detail. 615. I want to be able to share this memorable experience with everyone I care about.